Can anybody help me out with this? I'm trying to make mathematica
calculate the variance of an expression, however I don't get the result
I expected, a numerical value.
In[144]:=
<<Statistics`ContinuousDistributions`
a:=NormalDistribution[0,0.1]
b:=NormalDistribution[0,0.1]
c:=NormalDistribution[0,0.1]
z:=0.7a-0.5b-0.8c
Variance[z]
Out[149]=
Variance[-0.6 NormalDistribution[0,0.1]]